Agricultural and Forestry Experiment Station, School of Agriculture and Land Resources Management, University of Alaska - Fairbanks(University of Alaska Agricultural and Forestry Experiment Station, 1985)

Agricultural and Forestry Experiment Station, School of Agriculture and Land Resources Management, University of Alaska-Fairbanks(Agricultural and Forestry Experiment Station, University of Alaska-Fairbanks, 1986)

Agricultural and Forestry Experiment Station, School of Agriculture and Land Resources Management, University of Alaska-Fairbanks(Agricultural and Forestry Experiment Station, University of Alaska-Fairbanks, 1987)

Agricultural and Forestry Experiment Station, School of Agriculture and Land Resources Management, University of Alaska Fairbanks(Agricultural and Forestry Experiment Station, University of Alaska Fairbanks, 1988-01)

Agricultural and Forestry Experiment Station, School of Agriculture and Land Resources Management, University of Alaska Fairbanks(Agricultural and Forestry Experiment Station, University of Alaska Fairbanks, 1989-01)

Agricultural and Forestry Experiment Station, School of Agriculture and Land Resources Management, University of Alaska Fairbanks(Agricultural and Forestry Experiment Station, University of Alaska Fairbanks, 1990-01)

Agricultural and Forestry Experiment Station, School of Agriculture and Land Resources Management, University of Alaska Fairbanks(Agricultural and Forestry Experiment Station, University of Alaska Fairbanks, 1991-01)

Agricultural and Forestry Experiment Station, School of Agriculture and Land Resources Management, University of Alaska Fairbanks(Agricultural and Forestry Experiment Station, University of Alaska Fairbanks, 1993)

School of Agriculture and Land Resources Management, Agricultural and Forestry Experiment Station, University of Alaska Fairbanks(Agricultural and Forestry Experiment Station, University of Alaska Fairbanks, 1994)

School of Agriculture and Land Resources Management, Agricultural and Forestry Experiment Station, University of Alaska Fairbanks(Agricultural and Forestry Experiment Station, University of Alaska Fairbanks, 1995)

School of Agriculture and Land Resources Management, Agricultural and Forestry Experiment Station, University of Alaska Fairbanks(Agricultural and Forestry Experiment Station, University of Alaska Fairbanks, 1995)

School of Agriculture and Land Resources Management, Agricultural and Forestry Experiment Station, University of Alaska Fairbanks(Agricultural and Forestry Experiment Station, University of Alaska Fairbanks, 1996)